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Jan. 25, 1938.
G. LONG
2,106,463
BAG OPENING MECHANISM
Filed Sept. a, 1936‘
4 sheets-sheet 1
George lofzkgf- >
gum;
Jan. 25, 1938.
a. LONG
2,106,463
BAG OPENING MECHANISM
Filed Sept. 8, 1936
_
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_
_
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_
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4 Sheets-Sheet 2
Jan. 25,- 1938. ‘
a. LONG
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2,106,463
_
BAG OPENING MECHANISM
Filed ‘Sept. s, 1936
4 Sheets-‘Sheet 4_
YE.
Geore Z0
g-ww 1,
-Pstented--Jsm25,1938_
‘
a
"
2,106,463
_
I
UNITED‘ STATES. PATENT" OFFICE
BAG OPENING MECHANISM
‘George Long, Joliet, I'll., assignor, by meme as-'
signments, tocFranklh'r Steel Works, Juliet, Ill., a corporation of Maine
'
. Application September s', 1936, ‘Serial No. 99,776
-
18 Claims. I (Cl. 93-day
The invention relates to bag handling mecha-
‘
’
stantially along line 4-4 of Figure 1 and show
nism and has particular reference to an im- I ing the mechanism for actuating the ?ngers of
proved bag feeding magazine having associated the bag opening means;
'
therewithnovel bag opening means for succesFigure 5 is a horizontal sectional view taken
sively ‘removing a collapsed bag from the maga-
immediately abovethe support for the bag open- 5
zinc and opening the same, whereby the open bag
may be delivered to other mechanism having operation to ?ll the bag.
'
Automatic machines for ?lling and closing cof-_
sume when inserted within the same;
10 fee bags generally include a magazine and'means
for opening the collapsed bags supported by the
i
'
'
Figure 'l is an elevational view showing the bag 10
of Figure 6 after the ?ngers have been rotated -
magazine. The improvements of the invention.
have been particularly adapted for use in con,
ing ?ngers;
'
Figure 6 is an elevational view showing a col
lapsed bag and the position which the ?ngers as- =
to open said bag; and-
~
-
Figure 8 is a side elevational view of the open
nection with the bag ?lling and closing mecha-
bag of Figure 7.
l5 nism shown in the application of George Long
n
Referring to-the drawings, particularly Figure 15
and Elwell B. Larsen, Serial ‘No. 87,972, ?led - 1, the supporting structure for supporting the ap-‘
June 29’, 1936, although of course the utility of paratus of the invention consists ‘of a plurality
the invention is not 1imited to this or any special of uprights Ill, H and I2 which rest on any suit
type of machine but on the‘ other hand will ?nd able foundation such as l3. The central upright
20 extensive application in many arts.
'
ll extends considerably'above the base structure 20
The primary object of the invention is “to provide novel bag opening ?ngers and actuating
means therefor which will produce vertical movement of the ?ngers for insertion within a col25 lapsed bag and simultaneous horizontal movement and rotation to withdraw the bag from the
magazine and open the same.
‘
of the machine as shown in Figure 4 and by
means of horizontal brackets l4 supports the
frame ii of thetbag opening mechanism to be
vmore particularly described. A platform l6 ex
tends under the frame to support the bags during 25
opening thereof by‘ the bag opening means, the
' a,
same having integrally ?xed thereto the huh I‘!
Another object of the invention is to provide
which isv vertically movable on the upright ll.
‘bag opening ?ngers and means for actuating the
The links l8 pivotally connect the hub l1 and
30 same in a novel and improved manner which will
the movable blocks 20 supported on the founda- 30
impart bodily movement to the ?ngers in spaced
horizontal and spaced vertical planes.
'
tion plate 2| and have threaded connection with
.
the shaft 22 which can be rotated by the opera
Another object of the invention is to provide tor to thereby elevate or lower the platform and
v bag opening means having improved operation thus position the same at the desired heightfor
3;, ‘for opening a ‘collapsed bag, whiclnywill be‘ ‘of the particular bags operated on by'the machine. .‘ 35
simple construction and economical to manufac- , The bag feeding mechanism indicated in its en
ture.
*
tirety by numeral 23 is suitably supported on
With these and other objects in ‘view the in- plate 24 to which is ?xed the depending shaft 25.
vention may consist of certain novel features of Said shaft provides a rack having meshing en40 construction and operation, as will be more fully gagement with the pinion 26 journalled in bear“ 1
described and particularly pointed out in the
speci?cation, drawings and claims appended
ing 21 suitably supported from upright l2. Rota
tion of the pinion is effected by handle 28 and
hereto.
thus the operator can elevate or lower the bag -
v
> In the drawings which illustrate an embodi- ' feeding mechanism to conform to the position of
;, ment of the invention and wherein like reference
the platform l6.
‘
I
characters are used to designate like partsFigure 1 is an elevational view showing in as-
' The'bag feeding mechanism shown in detail inv
Figures 2 and 3 comprises a ‘pair of spaced side
sociated relation the improved bag feeding maga-'
plates 30 which provide the arcuate base mem
zine and bag opening means of the invention;
5-.»
Figure 2 is a longitudinal sectional view‘ of
ber 3| of the mechanism. \_ Each side plate has
suitably secured thereto the'upstanding brackets l l
the magazine for supporting and feeding collapsed bags;
Figure 3 is a front elevational view of the bag
magazine shown'in Figure 2;
55
Figure 4 is a vertical sectional view taken sub-
32 which act as supports for the side frames 33,
the said supports retaining the-frames in spaced
relation and in supported position on base 3|.
As will be clear from Figure 2 the base 3| does not
extend the full length of the frames 33, the said /
‘
2
2,106,463
opening or gap in the base being completed by an
endless belt 34 passing over roller35, journalled
in the side plates 30 and located at the forward
end ‘of the mechanism and also passing over a
large driving roller 36 likewise journalled in the
side plates 30 and located in substantial verti
cal alignment with the terminal end of the arm
ate base 8|. The collapsed paper bags indicated
by numeral 3'! are thus'supported by base 3|
10 and by the revolving belt 34, said belt having
movement to propelthe bags in a forward direc
tion so that the forward bag can be readily re
moved by the bag opening means. A rolling block
1.5
outer end bracket 54, as previously de‘scribed'for
supporting one of the bag opening ?ngers.
The slides are mounted for horizontal recipro
cating movement in the member 18 which in turn
is supported by the vertical guide member so as to
have vertical reciprocating movement. The said
guide 80 extends from end to end of the frame l5
and has fiat sidesconnected by V-shaped-sur
faces, as clearly shown in Figure 5. Member 18
‘completely surrounds the guide 8|) having opposed
flat surfaces for engagement with thesides there
10
of which are connected by portions having angu
lar surfaces ?tting the grooves of said member.
or other suitable weighted member 38 is located ' As best shown in Figure 1, link 8| is pivotally conto the rear of the collapsed paper bags and fur-' nected to member 18 at 82, said link being pivoted
ther propels the bags in a‘ forward direction. at its upper end to lever- 83 journalled for rotation
Said block may be providedwith a thrust plate ' in the frame 6_ | by shaft 84. Link 85 connects the
40 pivotally secured at 4| to the bar 42 and rearwardly extending portion of the lever to an
yieldingly biased in a counter-clockwise direction _ arm 85 which is supported for pivotal movement
20 by'the coil spring 43.
‘
i
"
by shaft ‘II. The cam follower 81 rides within a 20
The collapsed .paper bags are retained at the cam race formed in'the cam‘5'l and is ?xed to the
forward end of the mechanism by a bottom clip
44, ‘side clips,45 and a top clip 45 which engages
the top of the longestside of the bag, as will be
arm 85 which thus imparts motion to the link
age described to effect vertical reciprocation of
the member 18 which thus carries with it the slides
opening ?ngers to pass between the collapsed
sides of the bags. The clip 45 forms a part of the
from the following description.
25 clear from Figure 3, thereby enabling the bag
_ frame 41 suitably supported in position over the
top of the bags by the bar 48, having connection
30 with block 49 which is ?xed to the upright l2.
The side guides 50, which engage and support the
sides in the vicinity of the upper portion of the '
bags, are also supported by the frame 41. ,
55 and the bag opening ?ngers, as will be clear 25
'
‘
Each slide 54 carries bracket 55 which journals
shaft 53 carrying one of the fingers. Each shaft
53 extends a short distance above bearing 54 and
has suitably secured thereto a link 88, Figure 5.
The outer end of each link, as at ‘89, is pivotally
secured to an arcuate link 90 pivoted at 9| to the
_
rigid arm 82 ?xedly secured to and thus carried by
The bag opening ?ngers 52, Figures 1 and 3, are the member 18. Whenthe channel members ‘I5
35 eccentrically ?xed to shafts 53 which are jour
are reciprocated, motion is imparted to the slides ml
nalled by brackets 54 suitably secured to'the hori-" 55 which bodily moves its ‘respective bag opening
zontal reciprocating bars 55. These bars in addi
'?n'ger from the full line position shown in Figure
tion to their horizontal ‘movement have vertical 5 to the dotted line position. However, the shaft
movement which results‘in the bag opening ?n
thereof has operative connection ‘through the
gers having a rectangular movement. The down ' links to a stationary member 92 and as a result of 40
ward and upward strokes of this rectangular this relative movement rotation of each shaft 53 is
5
movement are utilized to thrust the ?ngers into
thecollapsed bag and to withdraw them from the
bag opened thereby. The horizontal movement
45 produces rotation of the ?ngers so that they alter
' nate from a ?at'position, which they assume when
' they enter the bag, as shown in Figure 6, to a par
'50
allel position as shown in Figure 7. The mecha
nism for producing this rectangular motion of the
bag opening ?ngers will now be described.
The actuating means essentially consists of
three cams 56, 51 and 58,.Figures 4 and 5, fixed’ to
the cam shaft 50 suitably journalled by the spaced
bracket BI and which are integral with the frame ,
55 I5. Said cams may be driven by a drive shaft 52
effected, producing rotation of the bag opening
?ngers.‘ When the parts are in full line position,
Figure 5, the bag opening ?ngers are disposed in
spaced parallel relation and when the parts are in
dotted line position, the ?ngers are disposed with
their ?at sides in substantial alignment. In this I
latter position the ?ngers enter the bag and the
member 18 is then forced downward into its low
ermost position, causing the ?ngers to be inserted
within and extend for the full length of the bag
93, see Figure 6. The slides 55 are then recipro
cated in a direction rearwardly to effect removal
of the bag from the feeding mechanism and as a
result of this reciprocation the bag opening ?n
operatively'connecting with the cam shaft 60 by _ gers will be rotated sov that at the completion of
means of gears 53. The cam 56 is provided with a
cam race 64 within which is located a‘ cam follow
said reciprocation the‘ ?ngers will assume their
spaced parallel position, Figure 7. This rotation
er 65 ?xed to arm 66._ Said arm is journalled in of the ?ngers, which takes place on a vertical axis
bracket 6| at 51 and as shown in Figure 5 the ‘rear substantially coinciding with the outer edge of the 60
of said arm is provided with gear teeth 68. Said respectivek?nger, effects opening of the bag.‘ The
teeth mesh with a pinion l8‘ ?xed to shaft 1| ?ngers are eventually withdrawn from the open 1
journalled and extending between the brackets ‘ bag by vertical upward movement of the member
18, whereupon the operations just described are
65 6|. Arms 12 are ?xed to outer extending ends of ‘repeated.
said shaft and by means of links" the arms are
operatively connected to slides 14, respectively,
which are located on each side of the frame l5 and
suitably mounted with respect to the frame so as
70 to have horizontal reciprocating motion. Secured
to each slide 14 is a channel member 15, the same
being vertically disposed and extending an equal
distance above and ‘below the slide. The channel
thereof receives the pin 16 secured by screw 11 to
75 its respective slide 55, the said slide carrying on its
_However, before the bag opening ?ngers are
withdrawn from the bag a plunger 94- is inserted
within the same in order to hold the bag against
the platform “5 while upward movement of the
?ngers takes place. The plunger is suitably ?xed
to the end of rod 95 supported at its upper end
by bracket 96 which extends outwardly of the
member 91 suitably mounted on the guide mem
ber 80 for vertical reciprocating movement within
the frame IS. The‘ spaced arms of bracket 95
2,106,403
gages at one end one arm of the (bracket and
the end of said’ movement they‘ assume a spaced
parallel position. The movement of the plunger
at the other end a stop 96 ?xed to the rod 95.
downwardly until the‘ same engages the bottom
The‘ plunger is thus yieldingly caused to descend
within the open bag and is yieldingly forced into
contact with the bottom thereof, although being
positively returned to initial raised position.
Cam 58 is operatively connected to member 01
of the open bag, which is accomplished by cam.
58, serves to hold the‘bag-?rmly against the base
con?ne therebetween a coil spring 68 which en
through link I00, lever IOI, suitably journalled
10 by shaft 04, link I02 and arm I 03, journalled by
shaft ‘II and carrying a cam follower riding with
in a cam race provided by cam. 58.
Downward
movement of the plunger occurs immediately
after the bag has been opened by the ?ngers 52
15 and the same yieldingly-holds the bottom of the
bag'againsta base-member I04, Figure 2, until
the ?ngers are withdrawn.
Said base member
is supported by and forms part of the platform
I94 while the ?ngers are withdrawn. It is noted
thatthis downward movement of the plunger is
produced through the coil spring 00, providing
safety means in the event some obstruction
should prevent downward movement of the 10
plunger. It will be observed that rotation of the
bag opening ?ngers takes‘ place on a vertical axis
which substantially coincides with the rear edge
of the respective ?ngers. This construction has
proven very satisfactory in quickly and emciently
opening collapsed paper bags such as coffee bags
and the construction has the additional advan
, tage in that a. ?lling spout may be-substituted ,
g
I6. Associated therewith are a pair of stationary for the plunger so as to'?ll the bags‘ immediately
20 spring clips I05, and a pair of movable spring _ upon opening of the same by the ?ngers. It will 20
clips I06, the latter being carried by block I01
be evident from Figure 5 that the parts effecting
located below the base I04. Said block is mount
ed on pins I08 and thus reciprocates vertically,
rotation of the ?ngers have ample clearance with
respect to the plunger which is axially ‘located
which motion-is imparted thereto by the toggle and positioned directly over the opened bag.
25 levers I09. Link IIO connects the toggle levers
The invention is not to be limited to or by
25
with lever III pivoted at .I I2 to block 49 ?xedly details of construction of the particular embodi
secured to the upright ‘I2. vThe upper end of . ment thereof illustrated by the drawings, as var
lever III is connected ‘by a relatively long link ious other forms of the device will of course be
II3 to one of the arms ‘I2 as will be clear from apparent to thoseskilled in the art without de
30 an inspection of Figure 1. Movement of this parting from the spirit of the invention'or the 30
, .
arm will rock lever Ill and break the toggle scope of the claims. '
formed by the toggle levers I09 with the result
What is‘ claimed is:
Y
,
that the spring clips I06 will be lowered sub- - -' ‘1. Bag opening means comprising a pair of
stantially ?ush with the base I04. Return of the)
35 lever ‘I2 to its initial position, as shown in Fig
bag opening ?ngers, each ?nger being substan
tially ?at throughout its entire length, and means
ure 1, will locate the toggle levers in a straight rotating said ?ngers from a position wherein
line position, whereupon the spring clips will be , ‘the ?ngers are disposed edge to' edge with their
elevated to their highestposition. This action corresponding faces in alignment to a position
of the spring clips takes place in timed relation 'substantially 90 degrees, removed therefrom
40 v with the removal and opening of the bag and whereby the faces which werein alignment are
bag opening ?ngers, each ?nger being substan
member I04. The movable clips, together with
tially ?at throughout its ' entire length, and
45 the stationary clips, will retain the bag in posi
tion on the base until the plunger is withdrawn.
The endless belt 34, previously described as
having movement to propel the bags in a for
ward direction so that the forward bag can be
50 readily removed by the bag opening ?ngers, re
ceives actuation from lever III through link III
which is pivotally connected to the upper end
of lever I I5 suitably ?xed to shaft II6 supporting
40
disposed in- approximately parallel. planes,
the clips will be elevated so as to engage the
bottom of an open bag as the plunger 04 forces
said bottom of the bag into contact with the base
2. Bag opening means comprising a pair of
means rotating said ?ngers, from a position
wherein the ?ngers are disposed edge to edge I
with their, corresponding faces in alignment to
a. position 90 degrees removed therefrom where
by the faces which ‘were in alignment are dis
posed in approximately parallel planes, the pivot
axis of‘each ?nger substantially coinciding with
the'outside edge of the ?ngers
'
3. ‘Bag opening means ‘comprising a pair of
the driving roller 36. The pawl II'I,'carried by
bag opening ?ngers, each ?nger being- substan
also ?xedto shaft H6 and as the lever H5 is
rocked the ratchet will-be advanced one'notch
in a‘clockwise direction. The pawl I20 prevents
reverse rotation of the driving roller.
width less" than one-half the width of thelb'ag,
and means rotating said?ngers from a position
wherein the ?ngers are .disposed edge to edge
with their corresponding faces in alignment to
A quantity of collapsed bags will be held by
the bag‘ feeding mechanism of the invention in
compact relation and as the endless belt 34' is
given intermittent movement, the bags will be
in approximately parallel planes, the pivot axis]
of each ?nger being vertical and substantially
55 lever “5.. is adapted to engage the ratchet H8 , tially ?at throughout its length and having a
60
> propelled forward of the mechanism, thus main~
taining the'forward bag ?rmly against the clips
45 and 46. The bodily movement of the ?ngers
52 may be described as rectangular since they
have'downward movement for inserting the fin
70 gers when in a ?at aligned position within the
collapsed bag and are then given bodily move
ment in a horizontal and rearward direction to
remove the bag from the mechanism and simul
taneously open the bag since this bodily move
ment eiTects rotation of the ?ngers whereby at
a positioni90 degrees removed therei’rom whereby 60
the faces which were in aligninent‘are disposed .
coinciding with the outside edge of the ?nger.'
4.-Bag opening means romprising a pair of
bag opening ?ngers, each ?nger being substan
tially ?at throughout its length,‘ means support
ing said ?ngers for rotation on a‘ vertical axis
and for bodily movement, and means producing
rotation of said ?ngers from a position wherein
the ?ngers are disposed edge to edge with their
corresponding faces in alignment to a position
90 degrees removed therefrom whereby the faces
which were in alignment are disposed in approxi
mately parallel planes.
'
2,106,463
5; Bag opening vmeans comprising 'a pair of ing rotation of‘said ?ngers as a result of said
4-
-
bag opening ?ngers, each ?nger being substan
,rearward‘movement, whereby the ?ngers pivot
\ tially ?at throughout its length, means support- ‘ from a position with their ?at surfaces in align
ing said ?ngers for rotation on a vertical’ axis and
~ for-bodily movement, and means producing rota
tion of said ?ngers from a position wherein the
?ngers are disposed edge to edge with their cor
ment to a position 90 degrees removedthere
from, which pivotal movement causes opening of
the collapsed bag thereon, and a vertical recipro
cating plunger having downward movement to
responding faces in alignment to a ,position 90 " enter the bag after opening thereof.v
degrees removed therefrom whereby the faces
.
12. Bag opening means comprising a pair of
which were in alignment are disposed in approxi ‘ bag opening ?ngers, supporting means for said 10
'mately parallel planes, the pivot axis of each ?ngers including bars mounted for horizontal
?nger substantially coinciding with the outside reciprocating movement and which rotatably sup
edge of the ?nger.
port the ?ngers permitting rotation thereof on
6. Bag opening means comprising a pair ‘of a vertical axis, a member mounted for vertical
reciprocating movement, said member carrying 15
bag opening ?ngers, each ?nger being substan
tially ?at-throughout its length, means support: said bars whereby the bag opening ?ngers have
vertical movement in- spaced planes and hori
ing said ?ngers for rotation on a vertical axis
and for bodily movement, saidbodily movement zontal movement in spaced planes, and means
comprising movement in a horizontal plane and producing rotation of said ?ngers as a result of
20 movement in a vertical plane, and means pro
their bodily .movement in the horizontal planes. 20
l3. Mechanism for opening collapsed bags in
ducing rotation of said ?ngers as a result of
cluding a pair of bag opening ?ngers, support
their bodily movement in a horizontal plane.
15'
7. Bag opening means comprising a pair of
bag opening ?ngers, each ?nger being substan
25 tially ?at throughout its length, means support
ing means for said ?ngers including bars mounted
for horizontal reciprocating movement and which
rotatably support the ?ngers permitting rotation 25
ing said ?ngers for rotation on a vertical axis
thereof on a vertical axis, a member mounted
and for bodily movement, said bodily movement
including vertical reciprocating and horizontal
translating
movement, and means producing r0.
30 tation of said
?ngers as a result of their hori
zontal translating movement, the pivot axis of
each ?nger substantially coinciding with the out
side edge of the ?nger.
for vertical reciprocating movement, said member
8. Bag opening means comprising a pair of
bag opening ?ngers, each ?nger being substan
tially ?at throughout its length, means support
ing said ?ngers for rotation on a vertical axis
and for bodily movement, said bodily movement
including motion in spaced vertical planes and
in spaced horizontal planes, and means produc
ing rotation of said ?ngers‘ as a result of their
motion in each of the spaced horizontal planes.
9. Bag opening means comprising a pair of
bag opening ?ngers, each ?nger being substan
tially ?at throughout its length, means support
ing said ?ngers for rotation on a vertical axis
and for bodily movement, means producing rota
tion' of said ?ngers as a result 'of their bodily
movement to cause said ?ngers to pivot from a
position with their corresponding faces in align-v
ment to a position substantially 90 degrees‘ re
moved therefrom, whereby said ?ngers cause
opening of a collapsed bag thereon, and a vertical
reciprocating plunger having downward move
‘ment to enter the bag after opening thereof. -
10. Bag opening means comprising a pair of
bag opening ?ngers, each ?nger being substan
tially ?at throughout its length, means support-'
ing said ?ngers for rotation on a vertical axis,
means imparting bodily movement to said sup
porting means, including movement in a vertical
plane and movement in spaced horizontal planes,
and means producing rotation of said ?ngers as
65 a result of said movement in the spaced hori
zontal planes.
11.
Bag opening means comprising a pair of
bag opening ?ngers, each ?nger being substan
tially ?at' throughout its length, means support
ing said ?ngers for rotation on a vertical axis,
means imparting bodily movement to said- sup
porting means whereby said ?ngers have down
ward movement in a vertical plane to insert said
?ngers within a collapsed bag, and movement
75 rearwardly in a horizontal plane, means produc
carrying said ‘bars, means producing horizontal
reciprocating movement of said bars, other means
vertically reciprocating ' said member whereby 30
said' bag opening ?ngers have vertical movement
in spaced planes and horizontal movement in
spaced planes, and means producing rotation of
said ?ngers as a result of their bodily movement
in the horizontal plane.
'
.
35
14. Mechanism for opening collapsed bags com
prising a pair of bag opening ?ngers, supporting means for said ?ngers including bars mounted,
for horizontal reciprocating movement and which
rotatably support the ?ngers permitting rotation 40
thereof on a vertical axis, a member carrying
said bars, means mounting said member for ver
tical reciprocating movement, cam means oper
atively connecting with said member 'and pro
ducing vertical reciprocation thereof, other cam
means for producing horizontal reciprocating
‘movement of said bars, ‘whereby said bag open‘
ing ?ngers have’Vertical movement in spaced
planes and horizontal movement in spaced planes,
and links constructed and arrangedv to cause ro
tation of said ?ngers as a result of, their bodily
movement in the horizontal planes.
15. Mechanism for opening collapsed bags com
prising a pair of bag opening ?ngers, supporting
means for said ?ngers including bars mounted
for horizontal reciprocating movement, a shaft
50
projecting upwardly- from each of. said ?ngers
and being rotatably mounted by one of said
bars, whereby said ?ngers are rotatable on a
vertical axis, a member carrying said bars and 60
mounted for vertical reciprocating movement,
means producing vertical reciprocation of said
member, other means for-causing horizontal re
ciprocating movement of said bars in unison,
whereby said bag opening ?ngers have vertical 65
movement in spaced planes and horizontal move
ment in spaced planes, and links pivotally con
necting the shaft of each ?nger to said member.
and constructed and arranged to produce rota
tion of said ?ngers as a result of their bodily 70
movement in a horizontal plane.
16. Mechanism for openirr "f collapsed bags com
prising apair of bag opening ?ngers, support
ing means for said ?ngers including bars mount
ed for horizontal reciprocating movement and 75
5
2,106,488
which rotatably support the ?ngers permitting
rotation thereof on a vertical axis, a member
carrying said bars and mounted for vertical re
ciprocating movement, means vertically recip
rocating said member and other means having
actuation when said member is located at the
extremities of its stroke to cause horizontal re
cipr‘ocating movement of said bars, whereby the
bag opening ?ngers have vertical movement in
spaced planes and horizontal movement in
spaced planes, and means operatively connecting
the ?ngers with said member and constructed
and arranged to produce rotation thereof as a
result-of their bodily movement in the horizontal
15 planes.
1'7. Mechanism for opening collapsed bags com
prising a frame having a vertical guide member
extending the length thereof, a member mounted
for reciprocating movement-on said guide mem
member, means carried at the projecting end of
each ‘bar for journalling the shaft permitting
rotation thereof on a vertical axis, and ‘a bag
opening ?nger ?xed to the depending endv of
each shaft.
18. Mechanism for - opening collapsed bags,
comprising a frame having a vertical guide mem
ber extending the length thereof, a member
mounted for reciprocating movement on said,
guide member; a pair of bars mounted on the 10V
respective sides of said member and adapted to
have horizontal reciprocating movement with
respect thereto; means connecting said bars to
cause horizontal reciprocating movement there
of while permitting vertical movementof their 15
carrying member, means carried at the project;
ing end of each bar for journalling the ‘shaft
permitting rotation thereof on a vertical axis,
a bagopening ?nger ?xed to the depending end
of each shaft, links operatively connecting each 20
shaft with said member, said links being con
zontal reciprocating movement with respect. structed and arranged to produce rotation of the
'20 ber, a pair of bars mounted on the respective
sides' of said member and adapted to have hori
thereto, means connecting said bars to cause
25
horizontal reciprocating movement thereof while
permitting vertical movement of their carrying
?nger as a result of the horizontal reciprocating
movement of ‘its respective bar.
-
>
'
GEORGE
LONG.
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